December in Ocean City is the cloudiest month of the year. In December, the weather in Ocean City is typically cold. Average daily high temperature in December is about 8 degrees above zero. On average, Ocean City has 12 partly cloudy, 9 sunny, 6 rainy, and 4 cloudy days in December. The rains are usually heavy. December as well as January, February, and March is considered the most uncomfortable time to visit Ocean City.